The molarity of a solution is defined as the number of moles of solute dissolved in
Correct answer: C. one cubic decimetre of solution
- A. 1000 g of solvent
- B. one litre of solvent
- C. one cubic decimetre of solution
- D. one mole of solvent
Explanation
Molarity refers to the total volume of the final solution, not to the volume of solvent used, which is why a standard solution is made up to the mark in a volumetric flask rather than by adding a measured volume of water. Moles per 1000 g of solvent defines molality instead, a quantity that does not change with temperature. The distinction matters whenever a solution is heated.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Moles and Avogadro's Number
The mole connects the microscopic number of particles with measurable mass, using Avogadro's number, 6.022 × 10²³ particles per mole. Questions involve molar mass, conversion between mass, moles and particles, percentage composition, empirical and molecular formulas, and distinguishing atoms, molecules, ions and formula units.
Practise Fundamental Concepts of Chemistry
894 free Fundamental Concepts of Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Moles and Avogadro's Number questions
The relative atomic mass of an element is
The molar mass of carbon dioxide, CO2, is
The percentage by mass of carbon in carbon dioxide, CO2, is about
Which of the following samples contains the greatest number of atoms?
Consider the equation H2 + O2 gives H2O. What volume of hydrogen gas is required to produce 1 mol of water at standard temperature and pressure?
4moles of Carbon dioxide(CO2) have _____molecules.